Update app.py

app.py

@@ -53,8 +53,8 @@ def find_scenes(video_path, threshold=27.0):
 
         # Display and save frame
         #cv2.imshow('frame', frame); cv2.waitKey(0)
-
-        img = cv2.imwrite(str(frame_id) + '_screenshot.png',frame)
+        img = str(frame_id) + '_screenshot.png'
+        cv2.imwrite(img,frame)
         stills.append(img)
         #outputs.append("video")
     #shot_in = scene_list[1][0].get_frames() / scene_list[1][0].get_framerate()